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<title>DTLS_get_data_mtu</title>
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<ul id="index">
  <li><a href="#NAME">NAME</a></li>
  <li><a href="#SYNOPSIS">SYNOPSIS</a></li>
  <li><a href="#DESCRIPTION">DESCRIPTION</a></li>
  <li><a href="#RETURN-VALUES">RETURN VALUES</a></li>
  <li><a href="#HISTORY">HISTORY</a></li>
  <li><a href="#COPYRIGHT">COPYRIGHT</a></li>
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<h1 id="NAME">NAME</h1>

<p>DTLS_get_data_mtu - Get maximum data payload size</p>

<h1 id="SYNOPSIS">SYNOPSIS</h1>

<pre><code>#include &lt;openssl/ssl.h&gt;

size_t DTLS_get_data_mtu(const SSL *ssl);</code></pre>

<h1 id="DESCRIPTION">DESCRIPTION</h1>

<p>This function obtains the maximum data payload size for the established DTLS connection <b>ssl</b>, based on the DTLS record MTU and the overhead of the DTLS record header, encryption and authentication currently in use.</p>

<h1 id="RETURN-VALUES">RETURN VALUES</h1>

<p>Returns the maximum data payload size on success, or 0 on failure.</p>

<h1 id="HISTORY">HISTORY</h1>

<p>The DTLS_get_data_mtu() function was added in OpenSSL 1.1.1.</p>

<h1 id="COPYRIGHT">COPYRIGHT</h1>

<p>Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.</p>

<p>Licensed under the Apache License 2.0 (the &quot;License&quot;). You may not use this file except in compliance with the License. You can obtain a copy in the file LICENSE in the source distribution or at <a href="https://www.openssl.org/source/license.html">https://www.openssl.org/source/license.html</a>.</p>


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